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        <h3>黄老板第三次作业</h3>
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        <iframe name="left" src="https://flyman-hz.gitee.io/xly" width="300px" height="300px" marginwidth="10px"></iframe>
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            <a href="https://www.baidu.com" style="float: left">点击此链接打败百度！</a>
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